Public transport - Service interface for real-time information relating to public transport operations - Part 2: Communications infrastructure; English version EN 15531-2:2022
Edition 2023-02

Radio equipment and systems; radiotelex equipment operating in the maritime MF/HF service; technical characteristics and methods of measurement; english version ETS 300067:1990
Edition 1992-03

Transmission and multiplexing (TM); protocol suites for Q interfaces for management of transmission systems; English version ETS 300150:1992
Edition 1994-01

Integrated Sevices Digital Network (ISDN); 3,1 kHz telephony teleservice; attachment requirements for handset terminals; english version ETS 300085:1990
Edition 1992-02

Network Aspects (NA) - Support of existing services with guaranteed constant bit rate and specified transfer delay on Metropolitan Area Network (MAN); English version ETS 300278:1994
Edition 1994-10

Network Aspects (NA) - Metropolitan Area Network (MAN) - Protocol Implementation Conformance Statement (PICS); English version ETS 300268:1994
Edition 1994-10

Network Aspects (NA) - Metropolitan Area Network (MAN) - Medium Access Control (MAC) layer management; English version ETS 300273:1994
Edition 1994-10

European digital cellular telecommunications system (Phase 2) - GSM Public Land Mobile Network (PLMN) connection types; English version ETS 300528:1994
Edition 1995-01

Integrated Services Digital Network (ISDN) - Signalling interworking specification for ISDN User Part (ISUP) version 1; English version ETS 300343:1994
Edition 1995-01

European digital cellular telecommunications system (Phase 2) - Technical realisation of facsimile group 3 non-transparent; English version ETS 300539:1995
Edition 1995-06